Lynx

First I have a 87 TII. My problem is my brakes are fadeing "again".
A 4 months ago my brakes were fading and eventually went totally to the floor and i had no brakes unless i pushed real slow and then they would catch at the bottom. Ok I replaced the master cylinder and bleed the system. Everythings been just fine till today i was driving around and the brakes are fadeing again. They are still working but the pedal moves easy about half way down and then catches the brakes but not as good as it used to. If you push real hard at a stop light they well almost touch the floor. Ok so i checked the resivor on the master cylinder and its full. The fluid in the resivor also is real clean. Makes no sense. I know the front brake pads are good. I havent check the rear yet.
There are no leaks that i can see.

Lynx
Thanks for any info, and sorry for the long post i like to explian everything.

PraxRX7

My friend had the same problem and was told his rear calipers were going, also his slave cylinder or somethign like that

Icemark

Lynx,

If you pump the brake pedal does the hold height increase with each pump? Does it slowly drop if you hold your foot on the pedal?

From what you describe it sounds like you have either a leak master cyl or brake booster. The other option would be a leak in the vacume to the booster.

Lynx

It dosent make a difference if i pump them they still feel the same. Im not losing fluid either so i dont think the MC is leaking. The brake booster is starting to sound like its a possibility. I will check the vaccum to it today. I will also dissconnect it and see what happens.

Lynx

Lynx

Got into the car today and now they work fine didnt drive it very far but they are fine. Im wondering if the heat in the engine makes a difference becuse i only went down the block and back.